午评：沪指半日涨0.07% 工程机械板块涨幅居前

Market Overview - The A-share market experienced slight fluctuations with minor gains in the morning session, with the Shanghai Composite Index up by 0.07% to 3642.10 points, the Shenzhen Component Index up by 0.14% to 11173.87 points, and the ChiNext Index up by 0.21% to 2347.83 points [1] Sector Performance Top Gaining Sectors - The engineering machinery sector led the gains with an increase of 3.13%, achieving a total trading volume of 1,133.99 million hands and a total transaction value of 170.62 billion [2] - The wind power equipment sector followed with a rise of 2.71%, with a trading volume of 659.39 million hands and a transaction value of 89.64 billion [2] - The rail transit equipment sector saw an increase of 1.58%, with a trading volume of 257.26 million hands and a transaction value of 26.61 billion [2] Top Declining Sectors - The software development sector experienced the largest decline at -2.23%, with a trading volume of 1,902.91 million hands and a transaction value of 412.41 billion [2] - The IT services sector fell by 1.65%, with a trading volume of 2,692.79 million hands and a transaction value of 411.94 billion [2] - The semiconductor sector decreased by 1.62%, with a trading volume of 1,265.75 million hands and a transaction value of 586.80 billion [2]